Wuxi Lanhai Electric Motor Co.,Ltd
Add: 4#, Tianshi Road Shitangwan Town, Wuxi, Jiangsu, China
How to choose the motor explosion - proof grade when purchasing Marine Explosion-proof Motor
Many customers in the purchase of Marine Explosion-proof Motor, do not understand what is the meaning of explosion-proof grade, do not know what level should be used in Marine Explosion-proof Motor, the following explanation for the motor explosion-proof grade on behalf of the meaning.
Motor explosion-proof grade according to the type of work points, respectively, for the mine and the mine outside the factory two categories. One of the mine outside the Marine Explosion-proof Motor can be divided into: Exd Ⅱ AT4, Exd Ⅱ BT4, Exd Ⅱ CT4. Exd Ⅱ AT4 class Marine Explosion-proof Motor due to lower explosion-proof grade has been eliminated, the current domestic has no Marine Explosion-proof Motor manufacturers. Exd Ⅱ CT4 explosion-proof grade higher, but the price is much more expensive, only in special occasions. Therefore, the most commonly used for Exd Ⅱ BT4 Marine Explosion-proof Motor.
So, someone asked, Exd Ⅱ BT4 in the end what is the point?
1.Ex on behalf of the Marine Explosion-proof Motor logo;
2.d on behalf of the structure of Marine Explosion-proof Motor, that is, "flameproof" means;
3. Ⅱ on behalf of the class of Marine Explosion-proof Motor, that is, "factory" means;
4.B on behalf of the Marine Explosion-proof Motor explosion-proof grade B;
5.T4 represents the temperature group, ie the highest surface temperature is less than 135 degrees Celsius.
In China's economic industry, the industrial economy occupies a large proportion. But in the industrial work environment, many production sites will produce some flammable substances. For example, there are about two-thirds of the coal mine where there are explosive substances; chemical industry, about 80% of the production workshop area there are explosive substances. Oxygen: Oxygen in the air is ubiquitous. So in the production process a lot of use of electrical instruments, all kinds of friction of the spark, mechanical wear sparks, static sparks, high temperature and so on, especially when the instrument, electrical failure.
Objectively many industrial sites meet the conditions of the explosion. When the explosive concentration of explosive substances and oxygen in the explosion limit range, if there is explosion source, will explode. In this environment, the work of the motor on the need for Marine Explosion-proof Motor, so Marine Explosion-proof Motor came into being.
Of course, Marine Explosion-proof Motors are mainly used for coal mines, oil and gas, of course, petrochemical and chemical industries. In addition, in the textile, metallurgy, city gas, transportation, grain and oil processing, paper, medicine and other departments are also widely used. Marine Explosion-proof Motors as the main power equipment, usually used to drive pumps, fans, compressors and other transmission machinery.
With the development of science and technology, the development of production, there is an increasing risk of explosion. For example, edible oil production in the past is the traditional press method, after the 20th century, 70 years, China began to introduce advanced foreign leaching oil process, but this process to use the chemical solvent containing hexane, hexane is flammable and explosive Material; so leaking oil shop has become a dangerous place of explosion, the need to use Marine Explosion-proof Motor and other explosion-proof electrical products. Another example, in recent years, China's rapid development of roads, a large number of fuel stations appear, this way to the Marine Explosion-proof Motor to provide a new market. I believe in recent years, Marine Explosion-proof Motor market will quickly develop.